.pageloading {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  display: block;
  font-size: 0;
  color: #000;
  box-sizing: border-box;
  width: 42px;
  height: 32px;

  &_item {
    position: relative;
    box-sizing: border-box;
    display: inline-block;
    float: none;
    background-color: currentColor;
    border: 0 solid currentColor;

    &:nth-child(1) {
      position: absolute;
      bottom: 32%;
      left: 18%;
      width: 14px;
      height: 14px;
      border-radius: 100%;
      transform-origin: center bottom;
      animation: ball-climbing-dot-jump 0.6s ease-in-out infinite;
    }

    &:not(:nth-child(1)) {
      position: absolute;
      top: 0;
      right: 0;
      width: 14px;
      height: 2px;
      border-radius: 0;
      transform: translate(60%, 0);
      animation: ball-climbing-dot-steps 1.8s linear infinite;
    }

    &:not(:nth-child(1)):nth-child(2) {
      animation-delay: 0ms;
    }

    &:not(:nth-child(1)):nth-child(3) {
      animation-delay: -600ms;
    }

    &:not(:nth-child(1)):nth-child(4) {
      animation-delay: -1200ms;
    }
  }

  .la-dark {
    color: #333;
  }
}

@keyframes ball-climbing-dot-jump {
  0% {
    transform: scale(1, 0.7);
  }

  20% {
    transform: scale(0.7, 1.2);
  }

  40% {
    transform: scale(1, 1);
  }

  50% {
    bottom: 125%;
  }

  46% {
    transform: scale(1, 1);
  }

  80% {
    transform: scale(0.7, 1.2);
  }

  90% {
    transform: scale(0.7, 1.2);
  }

  100% {
    transform: scale(1, 0.7);
  }
}

@keyframes ball-climbing-dot-steps {
  0% {
    top: 0;
    right: 0;
    opacity: 0;
  }

  50% {
    opacity: 1;
  }

  100% {
    top: 100%;
    right: 100%;
    opacity: 0;
  }
}
